Index tab



J. H. RAND INDEX TAB.

APPLICATION FILED SEPT. l9. 1918.

1,427,549 Patented Aug. 29, 1922 J'Alv'IES H. RAND, OF NORTH TONAXVANDA,NEV] YORK.

INDEX TAB.

Specification of Letters Patent.

Patented Aug. 29, 1922.

Application filed September 19, 1918. Serial No. 254,721.

To all whom it may concern:

Be it known that I, James H. RAND, a citizen of the United States,residing at North Tonawanda, in the county of Niagara and State of NewYork, have invented new and useful Improvements in Index Tabs, of whichthe following is a specification.

This invention relates to index tabs of the type having a transparentpocket adapted to receive a removable index-slip. Such a tab is shownand described in Letters Patent of the United States No. 1,199,418,granted to me September 26, 1916. The improved tab is especiallydesirable for ledgers and other books, but is also applicable toindexcards of various kinds.

The object of my present invention is the improvement of this class oftabs with a view of increasing their strength and durability withoutadding to their bulk or thickness. A further object is to so constructthe tab as to avoid the formation of raised edges or shoulders on whichthe edges of the bookleaves are liable to catch.

In the accompanying drawings: Figure 1 is a face view of a book-leafprovided with the improved tab. Figure 2 is a cross section on line 22,Fig. 1. Figure 3 is a perspective view of the attaching clip. Figure 4is a similar view of the transparent strip. Figure 5 is a perspectiveview of the as sembled tab, omitting the label or index slip.

Similar characters of reference indicate corresponding parts in theseveral views.

1 indicates the leaf of a ledger or other book to the edge of which thetab is secured. The tab comprises a doubled strip 2 of transparentmaterial, as celluloid, and a clip 3 of suitable flexible material, aslinen, to which said strip is attached and which in turn is secured tothe leaf 1. The doubled celluloid strip projects beyond the edge of theleaf to form an open-ended pocket for the index slip or label 4 whichbears a letter or other index-designation, and is preferably removable,so that it may be readily changed, if desired. The inner end of thispocket is formed by the adjacent edge of the leaf or card to which thetab is applied.

7 of the clip,

The attaching clip 3 is formed by doubling a strip of flexible materialand cutting in its fold an opening 5 of the proper size to pass over thetransparent strip. The end portions of the strip are thus covered by theflaps or folds of the clip to which they are cemented or otherwisefirmly secured. These flaps embrace the leaf and are gummed directly toopposite sides thereof.

By this construction, the tab is comparatively thin, each fold of thetransparent strip and the clip consisting of but a single thickness ofmaterial. At the same time the attachment of the transparent member tothe inner sides of the clip greatly increases its strength anddurability.

Another important advantage afforded by this construction is theavoidance of projecting edges or shoulders on the outer sides leavingthe same practically smooth and preventing the edges of the leaves fromcatching on the ends of the strip which is liable to occur when they arearranged on the outer side of the clip.

The tab is supplied to the trade as a complete article of manufacture,the transparent strip being secured to the clip and the flaps of thelatter coated with a suitable adhesive. By simply moistening theadhesive, the user can readily apply the tab to a leaf, card or otherarticle.

As the tab comprises but two parts, it can be cheaply produced.

I claim as my invention:

1. An index tab, comprising a one-piece clip consisting of a doubledpiece of flexible material containing a single thickness and provided inits fold with an opening, and a doubled strip of transparent materialpassing through said opening and having its side portions secured to theinner sides of the clip flaps, said strip projecting beyond the fold ofthe clip and its side walls being separated, whereby said side walls andthe adjacent edge of the object to which the tab is attached form atransparent open-ended pocket for an index-slip.

2. The combination with a ledger-leaf or the like, of an index tabcomprising a dou bled piece of fabric containing a single thickness andembracing the edge of said leaf the flaps of said fabric being secureddirectly to said leaf, and its fold being pro vided With an opening, anda doubled transparent strip passing outwardly through said opening andhaving its side portions extended inwardly some distance beyond the edgeof the leaf and secured directly to the overlying side portions of saidfabric, the walls of said strip being separated, whereby said walls, thefold of said strip and the enclosed l0 edge of said leaf together forman openended pocket for an index-slip.

JAMES H. RAND.

